IFS prototype – PM3 LAM, 13/06/2003 Prototype testing at CRAL Tests at room temperature in the visible

IFS prototype – PM3 LAM, 13/06/2003 Tests in the visible and at room temperature of the integrated prototype  Goals: Test the alignement and optical quality of the complete prototype at room temperature Check that the prototype meets the requirements before starting the (costly) cold tests Minimize the number of cold tests  Milestones: Availability of the test plan (done, see LAM presentation at this PM) Set-up of the test equipment / benches (in progress, see this presentation) Tests (scheduled for 09-10/2003)

IFS prototype – PM3 LAM, 13/06/2003 The optical laboratory at CRAL  Room specially prepared for the tests of the ESA prototype: A/C installed to maintain temperature stability Laminar air-flow hood

IFS prototype – PM3 LAM, 13/06/2003 The optical bench  3 major elements: The source module: shall provide point-like and uniform illumination of the object plane of the prototype The prototype: the integrated prototype and its interface to the bench The exit module: the CCD camera and the reimaging optical elements

IFS prototype – PM3 LAM, 13/06/2003 The source module  Specifications: Shall provide point-source and uniform illumination of the object plane of the prototype Collimated beam on output (goes to the steering mirror) Shall allow testing at 0.6 and 1.0 (TBC) µm  Elements: Light source (source + integrating sphere when needed) Pinhole grid mask, filter Nikon lens

IFS prototype – PM3 LAM, 13/06/2003 The prototype module  Specifications: shall allow correct positioning of the prototype on the optical bench shall allow correct orientation of the prototype with respect to the optical axis  Elements: two Newport motorised rotation stages two translation mechanisms mechanical design has started

IFS prototype – PM3 LAM, 13/06/2003 The camera module  Specifications: shall allow imaging of all or part of the output slits of the prototype (tests in the image plane) shall allow tests in the pupil plane  Elements: 2 different Nikon lenses + one x5 microscope lens Apogée 1536 x 1024 visible CCD camera translation stages

IFS prototype – PM3 LAM, 13/06/2003 The calibration modules  Calibrating the source module: map the distortion in the plane of the slicing mirrors will make use of a spare steering mirror  Calibrating the camera module: map the distortion and the PSF of the camera module will make use of the same pinhole grid than in the source module

IFS prototype – PM3 LAM, 13/06/2003 Tests in the visible and at room temperature of the integrated prototype  Status: definition of the optical bench has started and is fairly advanced ordering of the parts has started design of the mechanical interfaces has started Work in progress…